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    <admin>
        <current_status>
            <date>2024-03-13</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-02-13</deposition>
            <header_release>2017-03-22</header_release>
            <map_release>2017-05-10</map_release>
            <update>2024-03-13</update>
        </key_dates>
        <title>Sub-tomogram average of the extended type VI secretion system sheath in Myxococcus xanthus</title>
        <authors_list>
            <author>Chang Y-W</author>
            <author>Rettberg LA</author>
            <author>Jensen GJ</author>
        </authors_list>
        <keywords>T6SS, type IV secretion, protein machine, secretion system, sheath, contractile, PROTEIN TRANSPORT</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Chang YW</author>
                    <author order="2">Rettberg LA</author>
                    <author order="3">Ortega DR</author>
                    <author order="4">Jensen GJ</author>
                    <title>In vivo structures of an intact type VI secretion system revealed by electron cryotomography.</title>
                    <journal_abbreviation>EMBO Rep.</journal_abbreviation>
                    <country>UK</country>
                    <volume>18</volume>
                    <first_page>1090</first_page>
                    <last_page>1099</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">28487352</external_references>
                    <external_references type="DOI">doi:10.15252/embr.201744072</external_references>
                    <external_references type="ISSN">1469-3178</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-8600</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-8602</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>5urw</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Type VI secretion system</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Type VI secretion system</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="246197">Myxococcus xanthus DK 1622</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>TssB</name>
                <natural_source database="NCBI">
                    <organism ncbi="246197">Myxococcus xanthus (strain DK 1622)</organism>
                    <strain>DK 1622</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018016617</theoretical>
                </molecular_weight>
                <number_of_copies>18</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSKESSVAPTERVNIVYKPATGNAQEQVELPLKVLMLGDFTGQEDARPLEQRAPINVDKANFNEVMAQQNLKVTLTAADK
LSADPNATMNVSLQFKNLNDFSPESVVNQVPELKKLLELRSALNALKGPLGNLPAFRKKLQALLADEDGRKALIKELGLT
EETK</string>
                    <external_references type="UNIPROTKB">Q1D305</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>TssC</name>
                <natural_source database="NCBI">
                    <organism ncbi="246197">Myxococcus xanthus</organism>
                    <strain>DK 1622</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.056188469</theoretical>
                </molecular_weight>
                <number_of_copies>18</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MANETQTQKSTGVANDASLSLLDEILSEAKLKPKDEGYDVAKRGVQAFITEMLAPNRSEERVDKALVDAMIAEIDKRLSS
QVNEILHAKEFQKLESSWRSLKFMVDRTDFRENTRVEMLNASKEDLQKDFEDAPEVTKSGLYKLVYSNEYGVFGGKPYGI
ISANYDFNVGPQDMELLRKCASVAAMAHAPFIGNAAPEVFGEESFLKLPDLKDLKSLFEGPQYARWHSFRESEDARYVGL
ALPRFLLRLPYGEKTVPVKAFNFTEDVVGHHERYLWGHASVALTSRVADSFAKFRWSPNIIGPQSGGAVENLPLHQYEAM
GEIQTKIPTEVMLTERREFELSEEGFIGLVFRKDSDNAAFFSANSTQKPRFFGNTPEGKAAETNYRLGTQLPYMFIMTRL
AHYIKVLQREQIGSWKEKSDLERELNHWLSQYISDMDDPAPAVRSRRPLRAARVVVEDVEGQPGWYRCSLQVRPHFKYMG
ASFTLSLVGKLDKE</string>
                    <external_references type="UNIPROTKB">Q1D304</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Hcp</name>
                <natural_source database="NCBI">
                    <organism ncbi="246197">Myxococcus xanthus</organism>
                    <strain>DK 1622</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018065271</theoretical>
                </molecular_weight>
                <number_of_copies>18</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MAESVHLYLKANGSDIKGDSTQTSLGRADSIECVAYSQKVFTAREAGSGLATGRRQYEGIEITKRIDKSSPLLMKALCEN
QVIDATFKFFRPNPTGDGTTEQFYTVSIKKARINAIQQTVPNSFVPASTNLPPMETLQLVFHTINWTITQGGVTHEDTWD
TQR</string>
                    <external_references type="UNIPROTKB">Q1D303</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>subtomogramAveraging</method>
            <aggregation_state>cell</aggregation_state>
            <specimen_preparation_list>
                <subtomogram_averaging_preparation preparation_id="1">
                    <buffer>
                        <ph>7.0</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE-PROPANE</cryogen_name>
                    </vitrification>
                </subtomogram_averaging_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <subtomogram_averaging_microscopy microscopy_id="1">
                    <microscope>FEI POLARA 300</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">1.5</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </subtomogram_averaging_microscopy>
            </microscopy_list>
            <subtomogram_averaging_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">24.0</resolution>
                    <resolution_method>OTHER</resolution_method>
                    <software_list>
                        <software>
                            <name>TOMO3D</name>
                        </software>
                    </software_list>
                    <number_subtomograms_used>687</number_subtomograms_used>
                </final_reconstruction>
                <extraction>
                    <number_tomograms>29</number_tomograms>
                    <number_images_used>687</number_images_used>
                </extraction>
                <final_three_d_classification>
                    <software_list>
                        <software>
                            <name>PEET</name>
                        </software>
                    </software_list>
                </final_three_d_classification>
                <final_angle_assignment>
                    <type>OTHER</type>
                    <software_list>
                        <software>
                            <name>PEET</name>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </subtomogram_averaging_processing>
        </structure_determination>
    </structure_determination_list>
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        <file>emd_8601.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
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        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>50</col>
            <row>50</row>
            <sec>60</sec>
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        <origin>
            <col>-25</col>
            <row>75</row>
            <sec>-30</sec>
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        <spacing>
            <x>50</x>
            <y>50</y>
            <z>60</z>
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        <cell>
            <a units="Å">390.00003</a>
            <b units="Å">390.00003</b>
            <c units="Å">468.00003</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
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            <minimum>-61.087383000000003</minimum>
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            <y units="Å">7.8000007</y>
            <z units="Å">7.8000007</z>
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        <contour_list>
            <contour primary="true">
                <level>130.0</level>
                <source>EMDB</source>
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        <annotation_details>None</annotation_details>
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